Dears,
During the pressure test of the customer's product, the data stored by NANDflash will sometimes be lost. After the test, it is found that the pin of "WP#" connected to the NANDflash chip of i.x6ull is always in a high level state.
Attached is the Flash datasheet and DTS for use on the board.
How to control "WP#" pin of IMX6ULL output low level to write protection of NANDflash chip?
客户产品软件压力测试时，遇到一些概率性NANDflash数据“临时性丢失”的问题。经排查，发现I.MX6ULL芯片连接NANDflash芯片的“WP#”管脚一直处于高电平状态（“WP#”为写保护管脚，低电平使能），无论是上电复位还是系统启动始终为高，理论上理解如果不对NANDflash芯片进行“写操作”，该管脚应该处于“低电平”状态才对，附件是板子上使用的flash手册。
